Hair coloring apparatus



FIG. 1 is a front perspective view of a hair coloring apparatus showing my new design.

FIG. 2 is a left side view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a back view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings are for illustrative purposes only and do not form part of the claimed design. 

The ornamental design for a hair coloring apparatus, as shown and described. 